Skip to end of metadata
Go to start of metadata

You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 33 Current »

Introduction

  • Starting from Project Pegasus described by 2024 System Architecture

  • Improving and maintaining the system in preparation for AEAC 2025

  • “Pegasus 2” is being built to this document’s specifications while Pegasus 1 will remain in it’s 2024 state mostly.

Table of Contents

Details

  • Improvements

    • Target additions before AEAC 2025 CONOPs

      • Pegasus 2 airframe is being built to this specifications. Once we get Pegasus 2 working we will retrofit some of the

    • Avionics cover​

    • Harness optimizations​

      • Wire AWG and length optimizations

    • Connector Optimizations

      • MT30s used on the phase leads. One on ESC side, straight harness down the arm, one on the motor side.

      • Using the ESC reversal pads to flip ESC directions

      • Using the

    • Landing gear optimizations

      • trying to increase rigidy and keep a known good failure point​

    • Ensure electronics are mounted properly

      • Use of zipties and tape is permissible as long as it is robust.

      • Lots of components are getting nicer mounts.

  • Maintaining

    • Improve system diagram and theory of operation document.

  • Targeting usage for next year’s competition​

    • need to wait for CONOPs to lock it in though because it could be extremely biased toward fixed wing which is arguably more fun then quad?

Electronics Summary

Desired System

First high level summary of how we want the system to look for 2024!

Maiden Flight

Minimal setup of Pegasus 2 showing the maiden flight configuration of the system.

todo: draw

BOM

Propulsion

Propulsion

Part Function

Manufacturer

Part Name & Link

Qty

Notes

Propellers

T-Motor

MF2211

4 Indiv

2 CW

2 CCW

 Alternatives

May be reasonable replaced with other props of similar size/pitch

Motors

T-Motor

Antigravity MN6007II

4 Indiv

See Motor Selection Subpage

ESC

Advanced Power Drives [APD]

120F3[X]v2

4

 Alternatives

This can reasonably be replaced by any 12S capable ESC that is able to support BI-directional dshot and > 50A continuous

Power

Power Distribution

Part Function

Manufacturer

Part Name & Link

Qty

Notes

Batteries

Turnigy

Heavy Duty 6200mAh 6s 60C LiPo Pack w/XT90

4

Investigate switching to custom Molicel P45B packs

(4x 9000mAh)

PDB

Advanced Power Drives [APD]

PDB500[X]

1

 Alternatives

Could reasonably be replaced with any 12S capable PDB, or with a wire harness with external bucks.

Power Monitor

Holybro

Holybro PM02D High Voltage

1

BEC

Mateksys

BEC12s-Pro

1-2

 Optional

The number of BEC uses depends on the number of subsystems that need voltage isolation which are present

Controls

Flight Control System

Part Function

Manufacturer

Part Name & Link

Qty

Notes

Autopilot

Holybro

Pixhawk 6x + SD Card (logging)

1

 Which one?

The autopilot standard gets revised every so often. The 6x is significantly improved from the 5x, and we recommend it for the competition drone.

 Onboard Sensors

Note that the “Cube” standard has multiple internal sensors, some of which we may list externally for redundancy or performance reasons!

GPS

Holybro

Holybro M10 GPS

1 Prim

1 Sec

 Which one?

The M10 is newer & cheaper.

 Primary vs Secondary

You’ll notice that you have an option for “Primary” and “Secondary” on the GPS’s. This refers to the wiring of the “Switch” on the gps and the termination of the GPS. With the pixhawk baseboard standard, most systems accept 1 primary GPS and 1 secondary GPS.

Unknown

Future RTK system

 How does RTK Help?

RTK gives more precision, which is always useful when we’re trying to have very precise position hold. Very expensive

Rangefinder 🔍

Benewake

Benewake TF02-i LiDAR CAN

1+

 Semi-Optional

Using a rangefinder is not strictly necessary for any flight mode but greatly improves the accuracy of auto-landing and stability of the drone when hovering close to ground level.

 Quantity

Using (1) rangefinder is the minimum for the system to function, but it is possible to use multiple rangefinders to get better data or to offer horizontal or vertical object detection.

 Alternatives

There are many different rangefinders available. Lidar typically reports least noise and is more accurate over a wider range of circumstances

Optical Flow Sensor (OFS) 🔍

CubePilot

HereFlow

1

 Semi-Optional

The drone will fly in all modes without the OFS, but it greatly improves position hold at altitude.

 Alternatives

ATM, there are multiple supported alternatives but please ensure they function at the same range

Compass 📉

Holybro

DroneCAN RM3100 Professional Grade Compass

1

Mount far from high current electronics

Disable the Pixhawk’s internal compass

Barometer 📉

N/A

N/A

Inside pixhawk

Autonomy computer

Raspberry Pi

Raspberry Pi 5

1

Is mounted on the drone

Peripherals

RF + Peripherals (grouped because it’s small bits of things)

Part Function

Manufacturer

Part Name & Link

Qty

Notes

Control Link & Telemetry Link

HappyModel

EP1 TCXO Dual

1

1 ELRS Diversity RX Airside run in gemini mode.

Custom receiver will be nicer

WARG

ELRS GemX Receiver

1

iFlight

iFlight ELRS 2.4GHz True Diversity RX

1

Video Transmitter

FlyWoo

VTX-1G3

1

Test and choose one of these

Aliexpress No-name

1.3GHz 4W VTX

1

FPV Cameras

Caddx

Baby Ratel 2

2 or 3

Number dep. on pilot pref. TBD

OSD

Holybro

Holybro Micro OSD V2

1

 HARD TO FIND

Please be careful

Video Mux

Lumenier

3-Way Multi Camera Video Switcher Board

1

Lighting 🔍

-

Lighting Integration 2025

NAVLights

-

-

Landing Lights

CV Camera

Hupuu

$200 CV Camera

1

$200 CV Camera

Groundside

Groundside

Part Function

Manufacturer

Part Name & Link

Qty

Notes

Ground station computer

Lenovo

Thinkpad T490

1

Alternatively: Any computer that can run Mission Planner. Will likely be changed for IMACS box when complete.

1.3G Video RX

FlyWoo

DRX-12A

1

Prefer this

ReadyMade RC

900-1.3 GHz Receiver w/Tuner

1

Available as a backup.

5.8G Video relay (TX)

AKK

TS832 5.8 GHz VTX

1

RC Control Link & Telemetry Link

WARG

ELRS Gemini / GemX

1

PREF GEMINI WHEN POSSIBLE

SuperG is COTS Gemini

Getting GemX working will be better

RadioMaster

RadioMaster Ranger FCC

1

BetaFPV

SuperG Nano Transmitter

1

FPV Goggles

-

Pilot Preference

RC Controller

RadioMaster

TX16s MkII ELRS Mode 2 HALL

2

 Modifications

The blue controller has an INTERNAL elrs rx hooked up to aux trainer so that wireless trainer may be used. pink → blue

Video Monitor

-

Generic 5.8 GHz Receiver

Note: Add wifi router and IMACS when finalized

  • No labels